Texas Instruments TPS26600PWPT

Overview

TPS26600PWPT from Texas Instruments is a 60-V, 2-A industrial eFuse IC with integrated reverse input polarity protection down to –60 V, 150-mΩ total R_ON, adjustable current limit (0.1–2.23 A ±5% at 1 A), and selectable fault response modes (circuit breaker, latch-off, auto-retry). It protects PLC power rails against overcurrent, surge (IEC 61000-4-5), reverse voltage, and overvoltage events.

For engineers reviewing the TPS26600PWPT datasheet, TPS26600PWPT pinout, TPS26600PWPT application, or TPS26600PWPT equivalent, key selection criteria include its dual back-to-back MOSFET architecture, ±60-V reverse polarity tolerance, IMON current monitor accuracy (±8.5%), 300-µA operating quiescent current, and UL 2367/UL60950 safety certification for industrial power distribution systems.

Technical Context

The TPS26600PWPT implements a robust protection control block with independent comparators for UVLO (adjustable 13.25–15.75 V), OVP (adjustable 28.5–34 V), reverse current blocking (V_IN–V_OUT threshold: –15 to –5 mV), and thermal shutdown (157°C). Its dV/dT pin enables programmable output slew rate via external capacitor, while MODE pin configures fault behavior without requiring external logic.

It integrates two N-channel MOSFETs in back-to-back configuration to enable bidirectional reverse-current blocking and withstand ±60-V transients. The device supports functional safety design with documentation for ISO 26262 and IEC 61508 system-level integration, and features open/short ILIM detection per UL60950 single-point-failure requirements.

Key Specifications

Pinout & Package

TPS26600PWPT is packaged in a 16-pin HTSSOP (PWP) with 5.00 mm × 4.40 mm body size and exposed PowerPad™ for enhanced thermal dissipation. The PowerPad must be connected to RTN via multiple vias.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar eFuse applications.

Compared with TPS26601PWPT, the TPS26600PWPT offers auto-retry behavior ideal for non-critical loads needing self-recovery; compared with TPS25982LQWRT, it delivers unique –60 V reverse tolerance and 60-V operation essential for industrial DC distribution, but at lower current rating.

Availability

TPS26600PWPT is available at Aetrix Electronics and suitable for programmable logic controllers, distributed control systems, and industrial surge protection requiring stable component supply across extended temperature and high-reliability operating conditions.

Supply support for TPS26600PWPT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies with decades of industrial-grade reliability validation.

The TPS2660x product line was designed specifically for high-voltage industrial power distribution, delivering integrated protection, programmable fault handling, and safety certifications to simplify ruggedized system design.

FAQ

What is the maximum continuous input voltage rating for the TPS26600PWPT?

The TPS26600PWPT has a recommended operating input voltage range of 4.2 V to 60 V, with an absolute maximum rating of 62 V for continuous operation and 70 V for 10-ms transients. Exceeding 62 V continuously risks permanent damage per the Absolute Maximum Ratings table in the datasheet. The device is rated for sustained operation up to 60 V, making it suitable for 48 V industrial buses with margin.

Does the TPS26600PWPT provide reverse current blocking during power-fail conditions?

Yes, the TPS26600PWPT provides active reverse current blocking using integrated back-to-back N-channel MOSFETs. When V_IN falls below V_OUT by more than 5–15 mV (V_REVTH), the internal comparator disables the FETs within 1.5 µs, preventing discharge of output holdup capacitors into the failing input rail - critical for maintaining control power during brownouts.

How is the current limit threshold set on the TPS26600PWPT?

The TPS26600PWPT current limit is set by connecting a resistor between the ILIM pin and RTN. Values from 5.36 kΩ (2.23 A) to 120 kΩ (0.1 A) yield ±5% accuracy at 1 A. The device also monitors for open or shorted ILIM resistors per UL60950, reporting failure via FLT and limiting current to 55 mA (open) or 95 mA (short) to ensure safe single-point-failure behavior.

Can the TPS26600PWPT be used in systems requiring functional safety certification?

Yes, the TPS26600PWPT is functional safety capable. Texas Instruments provides documentation including FIT rate data, failure mode effects analysis (FMEA), and diagnostic coverage metrics to support system-level compliance with IEC 61508 (SIL 2) and ISO 26262 (ASIL B). Its UL 2367 recognition and UL60950 single-point-failure testing further validate its suitability for safety-critical industrial applications.

What package type and thermal performance does the TPS26600PWPT use?

The TPS26600PWPT uses a 16-pin HTSSOP (PWP) package measuring 5.00 mm × 4.40 mm with an exposed PowerPad™. Its junction-to-ambient thermal resistance (R_θJA) is 38.6°C/W on a 2-layer board, and junction-to-board (R_θJB) is 18.2°C/W. TI recommends connecting the PowerPad to the RTN plane via ≥4 thermal vias to achieve specified thermal performance and sustain 2-A continuous operation at +125°C ambient.